package bigPack.web;

import bigPack.pojo.user;
import bigPack.service.UserService;
import bigPack.service.impl.UserServiceImpl;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;

public class LoginServlet_unuse extends HttpServlet {
    private UserService userService=new UserServiceImpl();
    @Override
    protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
//        获取请求参数
        String username=req.getParameter("username");
        String password=req.getParameter("password");
//        调用userService.Login()处理业务
        user loginUser=userService.login(new user(null,username,password,null));
//        如果等于null,说明登录失败、
        if(loginUser==null){

            //把错误信息和回显的表单项信息，保存到request域中
            req.setAttribute("msg","用户名或密码错误");
            req.setAttribute("username",username);
            //登录失败，调回登录失败页
            req.getRequestDispatcher("/page/user/login.jsp").forward(req,resp);
        }else{
//            登录成功，调到登录成功页面
            req.getRequestDispatcher("/page/user/login_success.jsp").forward(req,resp);
        }
    }
}
